Iodine status in ewes with the intake of iodine enriched alga Chlorella
2010
Travnicek, J.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Kroupova, V.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Konecny, R.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Stankova, M.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Stastna, J.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Hasonova, L.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta | Mikulova, M.,Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta
The effect of increased intake of iodine at different selenium intake was studied in three groups of lambing ewes consisting of five animals and in their lambs for 76 days (from day 4 to day 80 post partum). I in blood plasma, milk and urine was determined by a modified method according to Sandell-Kolthoff. Mineral supplement contained I and Se in the form of I- or Se-enriched alga Chlorella. The content of I and Se per 1 kg DM of experimental diet was as follows: group G1: 0.7 mg I and 0.2 mg Se, group G2: 0.7 mg I and 0.4 mg Se, group G3: 1.3 mg I and 0.4 mg Se. The increased intake of I was not accompanied by an I increase in blood plasma until day 60 of lactation. The highest I concentration in milk was recorded on day 20 to 30 of lactation while there was a drop on day 60 of lactation. I concentration in the blood plasma of lambs reflected I concentration in the milk of their mothers. The highest I concentration in milk, blood plasma and urine was in the group with its highest intake (G3). Lower urinary output of I and higher I output in milk in lambing ewes of group G2 compared to group G1 document the higher retention and utilization of I in ewes with a higher supply of Se. The average concentration of I in milk in group G1, G2 and G3 was as follows: 724.2+/-485.3; 885.9+/-460.6; and 1,126+/-262.5 microg/L, respectively.
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